agenttesla | 7018c77957bfa048fbc7eede4b2b2276d7ea556eb4cd0ab806cdcde40ea0a5e5

General

Target

Karcher FZE statement.exe
Size

394KB
MD5

b5979c5b2733e419902f4a7955e915b5
SHA1

99cb3633162c8225a8f7dc292d7b02db13f85c3e
SHA256

103463e2a6f054957a3f580afcd7fa1020db1e3441c99f51ca36f85da1efad3a
SHA512

9feed5f2cc2d2aa830a3208354402fcaa412ca98207436f7bfa0a65e3a2e05f775ea92ca8e5c8a1764f7dc48787315ac15f722845e5863ebd51d25756a4c2072

Score

10^/10

agenttesla collection keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
qwerty12345##

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1136-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1136-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1136-64-0x000000000044602E-mapping.dmp	family_agenttesla
behavioral1/memory/1136-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1136-68-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1136-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/892-57-0x0000000000790000-0x00000000007E2000-memory.dmp	rezer0

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\BAVLA = "C:\\Users\\Admin\\AppData\\Roaming\\BAVLA\\BAVLA.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Karcher FZE statement.exe

description pid process target process

PID 892 set thread context of 1136 892 Karcher FZE statement.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1136 RegSvcs.exe
1136 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1136 RegSvcs.exe

description	pid	process	target process
PID 892 set thread context of 1136	892	Karcher FZE statement.exe	RegSvcs.exe

pid	process
1136	RegSvcs.exe
1136	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1136	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Karcher FZE statement.exe

description	pid	process	target process
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe
PID 892 wrote to memory of 1136	892	Karcher FZE statement.exe	RegSvcs.exe

outlook_office_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

Processes:

RegSvcs.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Karcher FZE statement.exe
"C:\Users\Admin\AppData\Local\Temp\Karcher FZE statement.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1136

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/892-54-0x0000000000B30000-0x0000000000B98000-memory.dmp

Filesize
416KB

Download
memory/892-55-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download
memory/892-56-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/892-57-0x0000000000790000-0x00000000007E2000-memory.dmp

Filesize
328KB

Download
memory/1136-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-64-0x000000000044602E-mapping.dmp

Download
memory/1136-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1136-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads